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ST8201-CS 880826 (2)Transportation August 26, 1988 CERTIFIED MAIL Receipt #P484488265 Conoco Inc. 3519 Patrick Street Lake Charles, LA 70605 Mr. Alan D. Ratliff City Manager City of Coppell P. O. Box 478 Coppell, Texas 75019 RE: DENTON TAP ROAD IMPROVEMENTS CITY OF COPPELL, TEXAS Dear Mr. Ratliff: We have received your letter and construction plans concerning improvements to Denton Tap Road where it crosses the Conoco Inc. operated Con-Dor Pipe Line Company ("Con-Dor") 6-inch high pressure petroleum products pipeline. Conoco Inc. will permit construction across.the pipeline upon the Contrac- tor and City of Coppell ("City") agreeing to the following requirements: 1. After review with our Engineering Department, we must take exception to your suggestion that the line will not require concrete coating. The pipeline is currently installed inside of steel casing under Denton Tap Road. This casing provides protection from external stress due to traffic; it also reduces the risk of damage to the pipe during installation of utilities, drain lines, etc. In addition, the casing provides a means of monitoring the integrity of the pipe and provides a conduit for,,~ipe replacement if necessary. Extensions to the casing is not practical due to.sags in existing line and because of cathodic protection considerations. Once the pipe is covered by the road it will no long be accessible for maintenance, therefore, we must require installation of tested, heavy-wall, concrete coated pipe under the roadway. 2. The concrete coated pipe will be installed under the roadway and will extend approximately 25 feet east and west of the construction bound- aries. The cost for this modification, estimated to be $40,000.00 as shown on Exhibit A, will be borne solely by the City of Coppell. We require 100 percent of the actual cost be paid within 30 days of receipt of an invoice after pipeline modifications are complete. The City will be charged for actual costs for pipeline modifications, whether higher or lower than the estimated costs. 3. Conoco Inc.'s Division Office in Lake Charles, Louisiana, must be provided with final construction drawings for all work which will affect the Con-Dor pipeline, including a plot plan and a profile along the pipeline centerline showing any grade work to be done. The current drawings do not show the extent of grade work to be done Mr. Alan D. Ratliff August 26, 1988 Page 2 e 10. 11. 12. beyond the limits of roadway. The profile should show the vertical distance between the Con-Dor line and any proposed grading. Upon receipt of updated drawings, Conoco Inc. will revise the cost estimate to reflect any additional modifications required to the pipeline. Ail utilities which cross the Con-Dot pipeline must pass underneath by a minimum of 12 inches. Any utilities which parallel the pipeline will maintain a minimum separation distance of 5 feet from the util- ities outside wall to the outside of the Con-Dor line. Conoco Inc. will not allow the city or its contractor to use any material or equipment in the construction which in the opinion of the Con-Dor inspector would hinder or impair Con-Dot's ability to safely maintain and operate its line. Con-Dor retains the right to adequately mark its pipeline with perma- nent line markers to insure public safety and the future safe opera- tion of the line and to meet Department of Transportation Regulation. No engineering works, private or industrial dwellings, deep rooted plants, fences, other similar permanent structures will be allowed over any portion of the pipeline. At any point along the pipeline where the existing grade profile will be lowered by the removal of earth, the Con-Dor line must be lowered to a depth which provides a minimum cover of 36 inches after final grading. Con-Dor requires a minimum of 48 hours notice prior to any excavation, construction, or movement of equipment across its right-of-way so that its line can be staked to minimize the possibility of accidental damage. Additionally, Con-Dor personnel must be on site during exposure of the pipeline and during any work around the exposed line. The City shall indemnify and hold Con-Dor harmless from and against any and all claims for injuries to person or persons or for damages to property arising directly or indirectly from work to be performed by the City or those under contract to the City near the Con-Dot pipe- line. The Contractor shall indemnify and hold Con-Dot harmless from and against any and all claims for injuries to person or persons or for damages to property arising directly or indirectly from work to be performed near the Con-Dot pipeline by the Contractor or its sub-contractor. The City shall assume all responsibilitY for any and all damages to the Con-Dor operated pipeline arising directly or indirectly from work to be performed by the City, its contractors or subcontractors. Mr. Alan D. Ratliff August 26, 1988 Page 3 13. Con-Dor shall be named as additional insured without any qualifica- tions or restrictions by the Contractor performing work near the Con-Dor pipeline. Contractor shall maintain in effect during work near the Con-Dor line the following insurance coverages: Public liability insurance covering all work to be performed near the pipeline, with bodily injury limits of not less than $100,000 as to any one person and $300,000 as to any one accident and with property damage limits of not less than $100,000 for each accident. Such insurance shall include coverage for all liability assumed by Contrac- tor working near the pipeline under contract with the City with limits of liability not less than those set out above. It shall be the City's obligation to see that each and every contrac- tor and subcontractor employed by it carries and pays for the same kinds and amounts of insurance as are required of the Contractor. A certified copy of all insurance policies requested shall be received at the Conoco Division office in Lake Charles with Con-Dot Pipe Line Company named as the certificate holder prior to the commencement of work. 14. The City of Coppell shall indemnify and hold Con-Dot harmless from and against any and all claims for damage to Denton Tap Road and associ- ated water and drainage lines arising directly or indirectly from work being performed by Con-Dor or its Contractors on the Con-Dot pipeline. To initiate work on the pipeline modifications to accommodate the proposed construction, please have a copy of this letter executed by an officer of the Contractor and the City of Coppell and return to me along with final construction drawings. Enclosed for your information are copies of the API Brochure, "What You Should Know About Petroleum Pipeline Safety". Please pass these along to the Contractor and Project Inspector. ~ Should you have any questions, please call me at (318) 491-5913. Sinc.erely, ClUe A. Rhodes Director-Access & Regulations CAR/138/165:gr Enclosures Mr. Alan D. Ratliff August 26, 1988 Page 4 cc: Ann Kartsotis Jim Rau Joe Bob Anderson Steve Marsee Scott Williams Mr. John Karlsruh Ginn, Inc. 17103 Preston Road, Suite 100, Box 118 Dallas, Texas 75202 Mr. Alan D. Ratliff August 26, 1988 Page 5 Attest: ACCEPTED AND AGREED TO: Contractor: Company: Signature: Name: Title: Date: Telephone: Attest: City of Coppell: Signature: Name: Title: Date: Telephone